Safety catch



Allg- 5, 1952 B' l.. DlLl.

SAFETY CATCH Filed June 12, 1950 ATTORNE Ys Patented Aug. 5, 1952 UNITED STATES TENT GFFICE .y v e ,2,605,527`

'SAFETY CATCH Bernard Leroy Dill, )East'(r'recilwich,` R. I. t .implication June' 12, 1950, Serial No. 167,592

` type used for securing a pin stem in closed 'position and is a continuation-in partV of my copending application, Serial No. 23,720, led April 28, 1948.

Safety catches have been provided in various forms vand usually require some manual manipulation in'order to yposition the "safety catch -`in locked position.

One of the objects of this Vinvention to proe vide a safety catch .which maybe moved to locked position upon insertion oi the-pin stem into 4the catch although requiring some manual mariipulation in order to release the pin stem from such locked position. y Il n'other object of Vthis invention is 'to provide a safety'catch which will be of simple operation so that the inexperienced person may readily operatethe same even without looking at the catchtodoso. n Y n Another object of the .inventionis to provideA a safety catch which may be of relatively simple mechanical construction and simply assembled. Another object of this invention' is to provide a latch and gate which will beso located in their open" Aposition that 'when 'a pin isinse'rteci' thel parts will move to closed position.` t

With these and other objects `in view, the nventionrconsists of certain vnovel featuresvofcon str1-nation,V as will -be more fullylde'scribed vandparticiil'arly pointed out in the appended claims.v 'i -1 -In the accompanying drawings:

7. claims.` (o1. 24-157) f 2 l ward the base for the arms.. A gate is pivoted on one of the arms so as to swing across thev space between the arms'over the pin stem and provide a closure for the opening between the arms which receive the pin stem. A latch is pivoted on the other arm and in the same plane with the gate to lock the gate in closed position and also has a portion which is located to rslide along the gate and move the gate `to'its closed positionr and then' vlock it in this position. In orderthat't-he parts may maintain the relative position desired, they are so shaped' as to engage one withfthe other when swung to open positionr so that when engaged or in stopped relation, they will be in a position to receive the pin stem. The latch manipulates the gate, while the pin stem manipulates the latch. .Y

f With reference to the-drawings, I have illustrated la bar l0 which may have an ornamental face or amounting upon which some ornament may-be provided. 1 A pin stem joint designated Figure 1 is a perspective View of a pin stem, its

joint, Vand the catch which is the subject of this invention; f

Figure 2 is a sectional View showing the parts in closed position, as shown in Figure 1;

Figure 3 is a view similar to Figure 2 but showing the parts in open position with the pin stem about to move into the catch; .e

Figure 4 is a View similar to Figure 3 but showing the pin stem as having advanced into the catch and in the position which it assumes in forcing the catch to closed position;

Figure 5 is a sectional view on line 5 5 of Figure 2; and v Figure 6 is a sectional view on line Il---t of Figure 2. Y i

In proceeding with thisA invention I provide a pair of arms extending from a 'base in generally parallel relation to provide an opening between the arms extending from their ends distant from the base so that a pin stem may be inserted in this space between the arms in a movement to-- generally H is secured to the back ofthe bar and comprises a pairl of ears' l2 between which the eye"l3iof'thepinstem I4 is pivotallymounted by means yofi-a pivot 1&5. Thi'spin stem has a pointed end I6, which end is held by the safety catch 'l1 which is the' subject of this invention.

This safety catch `comprises a base I8 from which ears IQ are bent upwardly. Each of these ears i9 comprises spaced arms 20 and 2 I-.- A gate 22 ispivo'ted on one or -both arms 2| at23, while arlatch 24- is pivoted as at 25 on one orboth of the arms 2-. This gate and latch are best shownv in Figures 2,3, ande. The Vhead portionofthegate on one side of the pivot 23' is'so arranged that it may extend across the opening 26 between the arms 20 and 2| so that the pin Stem I4 will be blocked from removal from between the arms when this gate is in the position shown in Figure 2. The gate 22 extends downwardly providing a tail as at 21 on the other side of pivot 23 into the path` of movement of the latch.

The latch 24 has a handle 28 for manual manipulation extending outwardly from the portion adjacent opening 26 beyond the arm 20 upon which it is pivoted while the portion 29 of latch 24 on the other side of the pivot 25 has a curved recess 30 which may bel engaged by the pin stem I4 soas to force the latch about its pivot 25 from the positionv shown in Figure 3 4to the position shown in Figure 4, and in this movement the edge 3l of this portion 29 will slide along the edge its pivot 23 and swing the gate from the position shown in Figure 3 to the position shown in Figure 4. In order that the latch and gate may be held in this closed position, I provide a recess 35 in the latch and a projection or detent 36 on the gate so that as these surfaces slide one upon the other, there will be an interlocking engagement or entrance of the projection into the recess to hold the parts in closed position and prevent the outward pressure of the pin stem I4 from opening the gate.

'I'he latch is also provided with a projection 31 which extends downwardly so as to engage the end 38 of the gate and limit opening movement when the pin stein is inserted as shown by the Y arrow 4U in Figure 3, it will engage the recess 30 and upon further movement will swing the latchand in turn the latch will swing the gate to the closed position, passing through the position shown in Figure 4 until they reach the position shown inFigure 2 where they will be locked and an outward pressure of the pin stem on the gate will not swing the gate to open position, it being necessary for manual manipulation of the handle 28 in order to accomplish such opening.

I claim: v

l. A safety catch comprising a base, a pair of arms xed in spaced relation to the base and providing a U slot opening outwardly away from the base to receive between the arms a pin stem to be retained, said arms being of a suiiicient length to engage thegpin stem and support lateral pressure therefrom in opposite directions, agate pivoted to one of said arms and having a portion on one side of the pivot to swing iromthe varm on which it is pivoted completely across said slot to the other arm and thereby cross the path of movement of a pin stern inv its movement into the space be- 3. A safety catch as in claim 1 wherein the gate and latch move in the same planes and a portion on one side of the pivot of the latch slides along a portion on one side of the pivot of the gate and said sliding portions have interlocking means to hold them in one relative position.

4. A safety catch as in claim 3 wherein said interlocking occurs when the gate is in closed position.

5. v:A safety catch as in claim..1 wherein the gate and latch move in the same plane and a portion on one side of the pivot of the latch swings into engagement with a portion on one side of Vthe pivot of the gate and provides a stop for both to limit opening movement of the gate and latch.

6. A safety catch comprising a base, an arcuate gate extending through substantially 180 degrees of arc pivoted intermediate its ends to said tween said arms toV block the removal of the pin stem from between the arms and also having a portion on the vother side of said pivot, and alatch pivoted on the other of said arms having a portion extending across said slot from the arm on which it is pivoted t0 the other arm and in the path of movement of thepin stem when inserted between said arms to belmoved by the pin'stem against that portion of said gate on the other side of the pivot causing it to move to closed position'and hold said gate in locked position.

2. A safety catch as in claim 1 wherein the pivot of said gate and pivot of said latch extend parallel to the plane of movement of the pin stem asl it enters-between said arms.

base at such location that the head of the gate will swing over the pin stem to be engaged thereby whenV in closing position andthe opposite or tail end of the gate will swing Vunder the path of movement of the pin stem when the gate is in open position and a latch also pivoted intermediate its ends on the base in the plane of said gate with an end portion on one side of the pivot slidably engaging the tail portion of said gate and also in the path of movement of thepin stem to be engaged by the pin stem when moved in one Y direction only yto be swung about its pivot and in turn swing 'thegate about its pivot from open to closed position,` said gate being alone engaged by the pinl stem in a movement in the other direction'and the portion of the latch on the other side of its pivot being clear of the path of movement ofthe pin stem, and interlocking means along said sliding surfaces to hold the parts in closed position. Y i

7. A safety'catchI as in claimv 6` wherein the interlocking means comprises a recess and a detent to enter-said recess.l

BERNARD 'LEROY DILL.

REFERENCES v CITED The following references are of recordin the file of this patent: A

, 4UNITED) ,STATES PAfriENfJ-SY Number r 

